How to get screen resolution with node.js

Question

How to get screen resolution with node.js

I need get screen resolution with node.js, but the following code don't work.

var w = screen.width;
var h = screen.height;

This also don't work.

var w = window.screen.width;
var h = window.screen.height;

Someone know how to get screen resolution with node.js ? Thank you.

javascript
node.js
client-server
screen-resolution

Answer 1

You should retrieve the window.screen.width and window.screen.height in your client-side JavaScript code and send that information to your server-side Node.js application via AJAX, WebSocket, as form data, etc.

For example:

(function(w) {
    $.ajax({
        type: 'POST',
        url: '/echo/json',
        data: {
            w: w.screen.width,
            h: w.screen.height
        },
        success: function() {
            console.log(arguments);
        },
        dataType: 'json'
    });
})(window);

This is common and is not related to the server-side technology. Doesn't matter what you use at the back-end (Node.js, Python, Ruby, PHP, Java, ASP.NET, etc.), you should send a data from client to server since the server doesn't deal with the user's browser directly.

Answer 2

There is now a screenres module via npm:

https://www.npmjs.com/package/screenres

Currently OS X only, but the author has instructions for adding cross-platform support should anybody be so inclined.

Answer 3

I solved the problem with phantomJS.

Install phantomJS:

sudo apt-get install phantomjs

Create app.js file:

var w = screen.width;
var h = screen.height;

console.log(w+"x"+h);

phantom.exit();

Execute:

phantomjs app.js

Return:

1366x768